| as reported | |
| FTC: | AR |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use when the Selected Value was assigned as reported, e.g. in a=20 reference book, but not evaluated by the compiler. This may be = appropriate=20 for non-compositional values, for example conversion factors or = density.=20 Use *As reported [AR]* together with Method Type *Method type not = known=20 [X]*. |
| average | |
| FTC: | AV |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value was chosen as the average of values = coming from different sources or different statistical = distributions* (not=20 necessarily normal distributions). |
| AI: | For Value Type AV, the only statistical fields that can be = filled are=20 N (number of contributing values), Minimum and Maximum. *A = statistical=20 distribution may consist of results from replicate analysis or = results=20 from separate samples (e.g. from differents projects) for which = the=20 separate samples' value distributions do not differ significantly=20 (statistically, usually tested with F- or similar test) and in = which case=20 all results can be combined. |
| below detection limit | |
| FTC: | BL |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when it is known that the component is present in the food, = but=20 the component was not detectable with the applied method, and thus = was=20 below the limit of detection (LOD). LOD must be provided within = the=20 corresponding method description. If LOD is not know, use *trace = [TR]* BL=20 can be used with a blank Selected Value. |
| AI: | BL will often be used with a Selected Value > 0. It is = important=20 when data are use for exposure assessment. A normal Selected Value = can be=20 0.5 * LOD. For the statistical evidence of this, see=20 = http://www.who.int/foodsafety/publications/chem/en/lowlevel_may1995.pdf |
| best estimate | |
| FTC: | BE |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value was chosen as the =93best=94 = available. BE is=20 weaker than *mean [MN]*, which applies to normal distributions, = and=20 *average [AV], which applies to any averaging of values. *Best = Estimate*=20 can be used even if further statistical information is reported. A = value=20 obtained from other component values by a single calculation is a = normally=20 assigned as *Best Estimate*. |
| less than | |
| FTC: | LT |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use only if the Selected Value is the highest value, if there is = no=20 further statistical/technical information available, and if no = other value=20 type applies. Before applying this descriptor, refer to *below = detection=20 limit [BL]* and *trace [TR]*. LT can be useful in case of = calculated or=20 imputed values. The figure given in Selected Value should be = interpreted=20 as an upper limit. |
| logical zero | |
| FTC: | LZ |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value iss assigned as '0' as the = component is=20 not assumed to occur in the food, e.g. alcohol in meat, or fat in = mineral=20 water (use LZ together with Method Type U). In the case of the = Selected=20 Value being assigned as '0' due to regulatory requirements, use LZ = together with method type *estimated according to regulatory = requirements=20 [L]* |
| maximum | |
| FTC: | MX |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when he Selected Value was chosen as the maximum value of = the set=20 of values, whether or not these values belong to the same = statistical=20 distribution*. |
| AI: | The Selected Value corresponds to the value reported in the = Maximum=20 field when details of the statistical results are given. *A = statistical=20 distribution may consist of results from replicate analysis or = results=20 from separate samples (e.g. from differents projects) for which = the=20 separate samples' value distributions do not differ significantly=20 (statistically, usually tested with F- or similar test) and in = which case=20 all results can be combined. |
| mean | |
| FTC: | MN |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value was chosen as the arithmetic mean = of=20 values deriving from the same statistical distribution*. This = descriptor=20 may only apply to normal distributions. For other value = distributions and=20 combinations, use *average [AV]*. |
| AI: | The Selected Value corresponds to the value reported in the Mean = field=20 when details of the statistical results are given. *A statistical=20 distribution may consist of results from replicate analysis or = results=20 from separate samples (e.g. from differents projects) for which = the=20 separate samples' value distributions do not differ significantly=20 (statistically, usually tested with F- or similar test) and in = which case=20 all results can be combined. |
| median | |
| FTC: | MD |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value corresponds to the value reported = in the=20 Median field when details of the statistical results are=20 given. |
| minimum | |
| FTC: | MI |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use when the Selected Value was chosen as the minimum value of = the set=20 of results, whether or not these belong to the the same = statistical=20 distribution*. |
| AI: | The Selected Value corresponds to the value reported in the = Minimum=20 field when details of the statistical results are given. *A = statistical=20 distribution may consist of results from replicate analysis or = results=20 from separate samples (e.g. from differents projects) for which = the=20 separate samples' value distributions do not differ significantly=20 (statistically, usually tested with F- or similar test) and in = which case=20 all results can be combined. |
| more than | |
| FTC: | MT |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use only if the Selected Value is the lowest value, if there is = no=20 further statistical information available, and if no other value = type=20 applies. MT is also useful in case of calculated or imputed = values, e.g.=20 in recipe calculation. The figure given in Selected Value should = be=20 interpreted as an lower limit. |
| other value type | |
| FTC: | E |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use for other Value Type not defined in this thesaurus. Use of = this=20 term should be avoided, if used only with great caution. See also=20 Additional Information. |
| AI: | E =3D else. Except for its use specified in a EuroFIR thesaurus = or=20 guidelines, please inform the maintainer of this thesaurus of the=20 circumstances requiring the use of this descriptor in case a new = Value=20 Type should be defined. |
| trace | |
| FTC: | TR |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use Trace only when there is evidence that some amount of the=20 component is present but no precise figure can be given and no = information=20 on e.g. LOQ/LOD. The TR descriptor is weaker than *below detection = limit=20 [BL]*. Further information about the exact definition of Trace = should be=20 provided ia a Remarks field in the appropriate in Value, Method=20 Specification, Component or Reference record. |
| AI: | The trace decsriptor is often used in printed food composition = tables=20 to indicate real values lower that the "resolution", i.e. the = number of=20 decimals, used for the component the tables. Representation of a = value of=20 0.05 is not possible, if the component is shown with with 1 = decimal as the=20 resulting value would be 0 (zero). In such cases, the value is = indicated=20 by e.g. a "tr" or "trace" to indicate that there is some amount of = the=20 component present. |
| undecidable | |
| FTC: | UD |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use this Value Type with a blank Selected Value, if values exist = but=20 no decision can be made, e.g. because the data differ too much. = Method=20 information or some statistical parameters (e.g. minimum and = maximum)=20 might however be available. If no information about the Selected = value is=20 available, use "unknown [N]". |
| unknown | |
| FTC: | N |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use this value type together with a blank Selected Value and = with=20 Method Type X , if compilation work has shown the value to be = unknown,=20 i.e. there is no literature available and no estimation or = calculation=20 possible. If a Selected Value is present, but nothing is known = about it=20 origin or derivation, etc., use "value type not known [X]". |
| AI: | Value Type "N" is only useful in the table of aggregated values = of a=20 FCDB, in cases where there is no Selected Value, no statistics, = etc. In=20 cases where the compiler is completely clueless as to what value = to=20 assign. It signals missing data for future analyses and enables = tables to=20 be printed correctly. |
| value type not known | |
| FTC: | X |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Use when the Value Type for the given value is not known. |
| AI: | Value type 'unknown [X]* apply to data taken from a publication = where=20 nothing is known about how the value was=20 calculated. |
| weighted | |
| FTC: | W |
| BT: | EuroFIR Value Type Thesaurus [00000] |
| SN: | Used when the Selected Value was chosen as the weighted average = of=20 values from different sources or different statistical = distributions, for=20 example weighting by brands by market share, by number of samples, = etc. |